Old Toshiba Satellite – No Recovery Disk – Reset To Factory

You can always use a generic XP installation disk to do a reinstall. You’d probably need to install some additional drivers but they should be available on the support page for that model.

Or clean it up manually–uninstall any software you’ve added; do a Disk Cleanup (Programs–accessories–system tools–Disk Cleanup) and/or run Ccleaner:

https://www.piriform.com/ccleaner

(the free version) Delete the contents of My Documents and any other folders that may contain personal information. Maybe run some malware scans with something like Malwarebytes:

https://www.malwarebytes.com/mwb-do…

(the free version. It’ll coax you to upgrade to the pay version. Just ignore that. But it’s OK to update the definition files when it warns you they’re outdated.)